Phlogopite mica paper

Phlogopite paper is a special insulating material made from natural phlogopite mica. It has the dual properties of high-temperature resistance and insulation. Its 0.05-0.2mm flexible sheet structure remains stable in harsh environments and is the core material for industrial insulation systems.

Product Category:

Mica Paper

Keywords:

Yuefeng Mica

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Description

Commodity name: Phlogopite mica paper

Key Properties of Phlogopite Paper

Excellent Heat Resistance ：Reliable operation at continuous temperatures up to 700°C (short-term peak: 800°C), outperforming white mica paper by 100-200°C, ideal for high-temperature industrial processes.

Strong Electrical Insulation ：Dielectric strength of 12-25 kV/mm, volume resistivity ≥10¹³Ω·cm, ensuring safe operation in high-voltage equipment.

Thermal Stability ：Low thermal conductivity (0.12-0.18 W/(m·K)) minimizes heat transfer, reducing energy loss in furnaces and power systems.

Mechanical Flexibility ：Tear-resistant, easy to cut, wrap, or laminate, adaptable to irregular surfaces such as motor windings, furnace linings, or cable insulation.

Chemical Resistance ：Resistant to moisture, oil, and weak alkalis, maintaining integrity in humid or industrial environments, extending service life.

Applications of Phlogopite Paper

Electrical Engineering ：Used as insulation material for high-temperature motors, transformers, and generators, especially in power plants and heavy machinery.

Metallurgy and Foundry ：Used for furnace linings, smelting equipment, and heat treatment furnaces to insulate and protect structural components from extreme temperatures.

Aerospace and Automotive ：Integrated into engine components, exhaust systems, and battery insulation where heat resistance and vibration resistance are crucial.

Industrial Heating ：Applied in heating elements, boilers, and thermal reactors to improve efficiency and safety through reliable insulation.

Technical Parameters:

Nominal Value (g/m²)	Average Tolerance (%)	Individual Tolerance (%)	Air Permeability (S/100ml)	Permeation Time (Time)	Water Extract Conductivity (μS/cm)	Mass Loss (%)	Tensile Strength (N/cm)	Electrical Strength (KV/mm)
65	±3	±5	≤300	≤9	10	0.3	≥7	≥16
75	±3	±5	≤320	≤10	10	0.3	≥7	≥16
100	±3	±5	≤340	≤11	10	0.3	≥7	≥16
120	±3	±5	≤380	≤17	10	0.3	≥9	≥16
150	±3	±5	≤450	≤22	10	0.3	≥12	≥16
160	±3	±5	≤500	≤25	10	0.3	≥12	≥16

Phlogopite Paper for Fire Protection Tape

Why Choose Phlogopite Paper?

Its natural magnesium content is key to its performance—unlike white mica, phlogopite’s chemical structure is inherently resistant to higher temperatures, making it indispensable for high-temperature applications. Compared to synthetic mica paper, it offers a cost-effective balance of performance and availability, leveraging natural mineral resources while providing consistent quality. For industries requiring durable insulation that maintains electrical safety in environments exceeding 700°C, phlogopite paper offers a proven, resilient solution.

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